Chances are you don't know his name, but I bet you recognize the face. I was going to hold off on Steven Tobolowsky for a while, but seeing as how he made a guest appearance on West Wing last night, I could hardly resist.

Tobolowsky often plays geeky characters like the infamous insurance salesman Ned Ryerson in Groundhog Day, but he really makes his mark in the sick and psycopathic roles. The insidious klansman Clayton Townley in Mississippi Burning might have been his most memorable character, he was brilliant as the sexual harrassing client Mitch Myerson in Single White Female, but I think his performance in Memento as the memory-challenged Sammy Jankis is just chilling.

Now you remember, don't you?